This expansion to Bohnanza contains new game variants and two new bean types, the Cognac bean and the Field bean. With High Bohn (for 3-5 players), the players may spend their thalers on buildings located in Virginia City. These building have attributes that give the players new tactics for winning. The Plus part of this expansion adds Field Beans (for 4-5 players) that can be harvested for a third field and Order cards (for 3-7 players) that allow players to earn extra thalers when they can fill very specific orders.
Note that even though the box states that this expansion is for 2-7 players, there are no official rules for 2 players games with this set.
High Bohn Plus is part of the Bohnanza family of games.